Introduction

GT2560/GT2560A+ is a compact board that is integrated with the mighty function of the Arduino Mega2560+Ultimaker and Arduino Mega2560+ramps 1.4 on respect of both software and hardware and has more premium features: the streamlined interfaces effectively avoid the unnecessary troubles, well-regulated compaction of components highly integrated saves more space and easier to be mounted on most applications.

Features：1.Integrated with the mighty function of the Arduino Mega2560+Ultimaker and Arduino Mega2560+ramps 1.4 kit, The GT2560 can not only take full place of them on respect of both software and hardware, but also features compact size, more convenient connection, and more stable.
2. Adopt ATmega2560 as the main control chip, coupled with the high-performance USB serial converter FT232RQ/CH340.
3. The power pack: operating voltage is 12V-24V; double power supply design provide for heatbed and logical part separately,overcurrent protection is also provided.
4. The main circuit adopts SMD fuse tube, the diode added to the power port can provide reverse protection to the whole circuit, in addition, the 5V USB is USB port protected with 500mA Recoverable fuse.
5．3 12v fan output and one PWM output for LED or other lighting equipment.
6. 3 55Amp MOSFET (with LED indicator, the actual output is restricted by the PCB board and the connector), all 3 MOSFET are equipped with heat sink to ensure sufficient heat dissipation and stable operation.
7. Support 5 A4988 stepper drivers (3 for X/Y/Z axis, and 2 for extruders); the subdivision of stepper motor can be setup by dial switch, eliminating jumper caps, easier to operate.
8. 3 temperature sensor input (100k thermistor is recommended)
9. Extended LCD and SD card interface support both LCD2004 and LCD 12864, with which you can print without your PC.
10. The firmware is the prevalent Marlin, which is known for stability, usability, and high-performance.

Load in the file you need to burn, Click the “check ()” button to check if it is right and then click the “->” button to upload

firmware, as shown below.

Upon uploading, the LED indicator corresponding to the TX， RX and L on the GT2560 will blink, if they stop blinking, it means the
file has been uploaded successfully.

After uploading, you can go on to the next step. If you cannot upload, check the dialog box below to identify the problem and solve
it. The common mistakes are the wrong select of type of board or serial port etc.

Get Started

GT2560 is the CPU of a 3D printer, manipulating the whole process of printing. GT2560 can’t be put in use directly without

uploading firmware.
1. Firmware uploading- marlin.
2. Setting parameters of the firmware
The parameters that need setting are as below, for those not mentioned just leave them as default.

#define BAUDRATE 250000

This parameter is for the baud rate of serial port. Note: a successful communication can be realized only when the Baud rate of

upper computer is identical with that of Firmware. The Baud rate is not set in random. The common Baud rate are: 2400，9600，19200

，38400，57600，115200，250000. The last three are frequently used for 3D Printer.

#define MOTHERBOARD 7

This parameter is set for board type. 3D Printer has many types of main board, and the settings of IOs are different, therefore,

the parameter has to correspond to the type of your board, or it can’t operate normally. The parameter of GT2560 should be 7

(single- nozzle). For other board, you can refer to the annotation on the board.

#define TEMP_SENSOR_0 1
#define TEMP_SENSOR_BED 1

The two parameters are set for the type of temperature sensor respectively. They are the critical parameter to check if the sensor

read temperature correctly. The printer can’t operate normally, even has potential risk (damage the device and even worse). You

must modify depending on the temperature sensor you use.

#define EXTRUDE_MINTEMP 170

This parameter is set to avoid potential risks when the extruder operates before reaching the rated temperature. If you use other

3D Printer, such as printer to make Chocolates, 45℃ is appropriate, so that the parameter configured to a lower value(such as 40℃

FAQ

You need to use the 12V-24V power supply, and if you are using the single extruder one, the total power is no less than 200W, if you are using the dual extruder one, the total power is no less than 240W.

3.The stepper motor on for the extruder doesn’t turn?

By default in the firmware, only when the temprature of the extruder reaches 170°C can the motor turn.